Cephalexin

Also Known As: Cephalexin, Keflex, Cefalexin, Keftab

Cefalexin (INN) or more commonly cephalexin is a first-generation cephalosporinantibiotic introduced in 1967 by Eli Lilly and Company. It is an orally administered agent with a similar antimicrobial spectrum to the intravenous agents cefalotin and cefazolin. It was first marketed as Keflex (Lilly), and now is also sold under several other trade names.

As of 2008, cefalexin was the most popular cephalosporin antibiotic in the United States, with more than 25 million prescriptions of its generic versions alone, for US$255 million in sales (though less popular than two other antibiotics, amoxicillin and azithromycin, each with 50 million prescriptions per year).

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